From: Lorenzo Bianconi <lorenzo@kernel.org>
To: bpf@vger.kernel.org
Cc: pablo@netfilter.org, kadlec@netfilter.org, davem@davemloft.net,
edumazet@google.com, kuba@kernel.org, pabeni@redhat.com,
netfilter-devel@vger.kernel.org, netdev@vger.kernel.org,
ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
lorenzo.bianconi@redhat.com, toke@redhat.com, fw@strlen.de,
hawk@kernel.org, horms@kernel.org, donhunte@redhat.com,
memxor@gmail.com
Subject: [PATCH bpf-next v2 0/4] netfilter: Add the capability to offload flowtable in XDP layer
Date: Sat, 18 May 2024 12:12:34 +0200 [thread overview]
Message-ID: <cover.1716026761.git.lorenzo@kernel.org> (raw)
Introduce bpf_xdp_flow_offload_lookup kfunc in order to perform the
lookup of a given flowtable entry based on the fib tuple of incoming
traffic.
bpf_xdp_flow_offload_lookup can be used as building block to offload
in XDP the sw flowtable processing when the hw support is not available.
This series has been tested running the xdp_flowtable_offload eBPF program
on an ixgbe 10Gbps NIC (eno2) in order to XDP_REDIRECT the TCP traffic to
a veth pair (veth0-veth1) based on the content of the nf_flowtable as soon
as the TCP connection is in the established state:
[tcp client] (eno1) == LAN == (eno2) xdp_flowtable_offload [XDP_REDIRECT] --> veth0 == veth1 [tcp server]
table inet filter {
flowtable ft {
hook ingress priority filter
devices = { eno2, veth0 }
}
chain forward {
type filter hook forward priority filter
meta l4proto { tcp, udp } flow add @ft
}
}
- sw flowtable [1 TCP stream, T = 300s]: ~ 6.2 Gbps
- xdp flowtable [1 TCP stream, T = 300s]: ~ 7.6 Gbps
- sw flowtable [3 TCP stream, T = 300s]: ~ 7.7 Gbps
- xdp flowtable [3 TCP stream, T = 300s]: ~ 8.8 Gbps
Changes since v1:
- return NULL in bpf_xdp_flow_offload_lookup kfunc in case of error
- take into account kfunc registration possible failures
Changes since RFC:
- fix compilation error if BTF is not enabled
Florian Westphal (1):
netfilter: nf_tables: add flowtable map for xdp offload
Lorenzo Bianconi (3):
netfilter: add bpf_xdp_flow_offload_lookup kfunc
samples/bpf: Add bpf sample to offload flowtable traffic to xdp
selftests/bpf: Add selftest for bpf_xdp_flow_offload_lookup kfunc
include/net/netfilter/nf_flow_table.h | 12 +
net/netfilter/Makefile | 5 +
net/netfilter/nf_flow_table_bpf.c | 94 +++
net/netfilter/nf_flow_table_inet.c | 2 +-
net/netfilter/nf_flow_table_offload.c | 161 ++++-
samples/bpf/Makefile | 7 +-
samples/bpf/xdp_flowtable_offload.bpf.c | 591 ++++++++++++++++++
samples/bpf/xdp_flowtable_offload_user.c | 128 ++++
tools/testing/selftests/bpf/Makefile | 10 +-
tools/testing/selftests/bpf/config | 4 +
.../selftests/bpf/progs/xdp_flowtable.c | 141 +++++
.../selftests/bpf/test_xdp_flowtable.sh | 112 ++++
tools/testing/selftests/bpf/xdp_flowtable.c | 142 +++++
13 files changed, 1403 insertions(+), 6 deletions(-)
create mode 100644 net/netfilter/nf_flow_table_bpf.c
create mode 100644 samples/bpf/xdp_flowtable_offload.bpf.c
create mode 100644 samples/bpf/xdp_flowtable_offload_user.c
create mode 100644 tools/testing/selftests/bpf/progs/xdp_flowtable.c
create mode 100755 tools/testing/selftests/bpf/test_xdp_flowtable.sh
create mode 100644 tools/testing/selftests/bpf/xdp_flowtable.c
--
2.45.1
next reply other threads:[~2024-05-18 10:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-18 10:12 Lorenzo Bianconi [this message]
2024-05-18 10:12 ` [PATCH bpf-next v2 1/4] netfilter: nf_tables: add flowtable map for xdp offload Lorenzo Bianconi
2024-05-18 10:12 ` [PATCH bpf-next v2 2/4] netfilter: add bpf_xdp_flow_offload_lookup kfunc Lorenzo Bianconi
2024-05-18 21:50 ` Kumar Kartikeya Dwivedi
2024-05-21 1:41 ` Alexei Starovoitov
2024-05-21 13:21 ` Lorenzo Bianconi
2024-05-18 10:12 ` [PATCH bpf-next v2 3/4] samples/bpf: Add bpf sample to offload flowtable traffic to xdp Lorenzo Bianconi
2024-05-21 1:45 ` Alexei Starovoitov
2024-05-21 10:19 ` Toke Høiland-Jørgensen
2024-05-21 13:19 ` Lorenzo Bianconi
2024-05-18 10:12 ` [PATCH bpf-next v2 4/4] selftests/bpf: Add selftest for bpf_xdp_flow_offload_lookup kfunc Lorenzo Bianconi
2024-05-21 1:43 ` Alexei Starovoitov
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=cover.1716026761.git.lorenzo@kernel.org \
--to=lorenzo@kernel.org \
--cc=andrii@kernel.org \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=daniel@iogearbox.net \
--cc=davem@davemloft.net \
--cc=donhunte@redhat.com \
--cc=edumazet@google.com \
--cc=fw@strlen.de \
--cc=hawk@kernel.org \
--cc=horms@kernel.org \
--cc=kadlec@netfilter.org \
--cc=kuba@kernel.org \
--cc=lorenzo.bianconi@redhat.com \
--cc=memxor@gmail.com \
--cc=netdev@vger.kernel.org \
--cc=netfilter-devel@vger.kernel.org \
--cc=pabeni@redhat.com \
--cc=pablo@netfilter.org \
--cc=toke@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).